| FAUTEUIL | • fauteuil n. An armchair. • fauteuil n. The chair of a presiding officer. • fauteuil n. (By extension) Membership in the Académie française. |
| FRUITFUL | • fruitful adj. Favourable to the growth of fruit or useful vegetation; not barren. • fruitful adj. Being productive in any sense; yielding benefits. • FRUITFUL adj. productive. |
| FUGUISTS | • fuguists n. Plural of fuguist. • FUGUIST n. one who composes fugues. |
| FUNICULI | • funiculi n. Plural of funiculus. • FUNICULUS n. (Latin) the umbilical cord. |
| FURIBUND | • furibund adj. (Formal, literary) Having a propensity to be furious; choleric, irate. • FURIBUND adj. (obsolete) raging. |
| FUSARIUM | • fusarium n. (Biology) Any of various fungi, of the genus Fusarium, some of which are pathogenic to plants and animals. • Fusarium prop.n. A taxonomic genus within the family Nectriaceae – many filamentous soil fungi. • FUSARIUM n. a type of fungus, causing plant disease. |
| FUTURISM | • futurism n. (Art) An early 20th century avant-garde art movement focused on speed, the mechanical, and the modern… • futurism n. The study and prediction of possible futures. • futurism n. (Judaism) The Jewish expectation of the messiah in the future rather than recognizing him in the presence of Christ. |
| FUTURIST | • futurist n. (Art) An adherent to the principles of the artistic movement of futurism. • futurist n. One who studies and predicts possible futures. • futurist adj. In the style of futurism. |
| FUTURITY | • futurity n. The future. • futurity n. The state of being in the future. • futurity n. A future event. |
| GUILEFUL | • guileful adj. Full of guile; treacherously deceptive. • GUILEFUL adj. deceitful. |
| REFUGIUM | • refugium n. Any local environment that has escaped regional ecological change and therefore provides a habitat for… • refugium n. (Aquaculture) A separate section of a fishtank that shares the same water supply, used for denitrification… • REFUGIUM n. (Latin) a stable area during a period of continental climatic change. |
| SUBFLUID | • subfluid n. A substance that is partly fluid, or between solid and liquid. • SUBFLUID adj. somewhat fluid. |
| SULFURIC | • sulfuric adj. (American spelling, chemistry) Of, or relating to sulfur, especially in its higher oxidation state. • SULFURIC adj. pertaining to sulfur, also SULPHURIC. |
| UNSINFUL | • unsinful adj. Not sinful. • UNSINFUL adj. not sinful. |
| UNWILFUL | • unwilful adj. Not wilful. • UNWILFUL adj. not wilful. |